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胎儿肠系膜上动脉(superior mesenteric artery, SMA)与腹主动脉(abdominal aorta, AA)的夹角异常与左侧不典型膈疝、肠旋转不良、中肠扭转、左肾静脉压迫综合征、肠系膜上动脉压迫综合征等畸形密切相关[1-7]。查阅国内外文献可见,目前关于SMA与AA夹角的报道主要关注人群是成人和儿童[3, 8-10],胎儿SMA与AA夹角的研究相对少见,不利于产前检查过程中检出与诊断上述畸形。本研究通过测量进行产检结果正常的胎儿SMA与AA夹角,计算其95%参考值范围,并探讨其与孕周、头围和腹围等参数的相关性和性别间差异,为胎儿期检出上述畸形提供影像学依据。
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[10] | 许海兵, 沈孝翠, 吉玉刚. MSCT对肠系膜上动脉与腹主动脉之间的夹角与距离的研究[J]. 医学影像学杂志, 2018, 28(12): 2122-. |
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[13] | 袁涛, 霍天龙, 杜湘珂. 64排螺旋CT评价肠系膜上动脉腹主动脉夹角与肠系膜上动脉压迫性病变及腹部脂肪分布相关性[J/CD]. 中华临床医师杂志(电子版), 2013, 7(10): 4521. |
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